Improved out-coupling efficiency from a green microcavity OLED with a narrow band emission source

Tyler Fleetham; Jeremy Ecton; Guijie Li; Jian Li

doi:10.1016/j.orgel.2016.05.041

Improved out-coupling efficiency from a green microcavity OLED with a narrow band emission source

Tyler Fleetham, Jeremy Ecton, Guijie Li, Jian Li

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

A highly efficient green microcavity organic light emitting diode was developed using a tetradentate cyclometalated platinum complex, PtN1N, with an intrinsically narrow emission spectral band (FWHM = 18 nm). Devices employing the narrow band emitter in MOLEDs consisting of a single pair of a high index dielectric, Ta₂O₅, and low index dielectric, SiO₂, exhibited a high peak external quantum efficiency of 33.7% compared to a standard OLED in the same device architecture with a peak external quantum efficiency of 25.6%. We have also found in our study that narrow band emission sources in tuned microcavity OLEDs exhibit larger enhancements in light out-coupling efficiency accompanied by small changes in color with respect to viewing angle compared to broad band emitters which is advantageous in display applications.

Original language	English (US)
Pages (from-to)	141-147
Number of pages	7
Journal	Organic Electronics
Volume	37
DOIs	https://doi.org/10.1016/j.orgel.2016.05.041
State	Published - Oct 1 2016

Keywords

Light extraction
Microcavity
Narrow spectral emission band
Platinum complexes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
Chemistry(all)
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

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10.1016/j.orgel.2016.05.041

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title = "Improved out-coupling efficiency from a green microcavity OLED with a narrow band emission source",

abstract = "A highly efficient green microcavity organic light emitting diode was developed using a tetradentate cyclometalated platinum complex, PtN1N, with an intrinsically narrow emission spectral band (FWHM = 18 nm). Devices employing the narrow band emitter in MOLEDs consisting of a single pair of a high index dielectric, Ta2O5, and low index dielectric, SiO2, exhibited a high peak external quantum efficiency of 33.7% compared to a standard OLED in the same device architecture with a peak external quantum efficiency of 25.6%. We have also found in our study that narrow band emission sources in tuned microcavity OLEDs exhibit larger enhancements in light out-coupling efficiency accompanied by small changes in color with respect to viewing angle compared to broad band emitters which is advantageous in display applications.",

keywords = "Light extraction, Microcavity, Narrow spectral emission band, Platinum complexes",

author = "Tyler Fleetham and Jeremy Ecton and Guijie Li and Jian Li",

note = "Funding Information: T. Fleetham and J. Ecton contributed equally to this work. The authors thank the Universal Display Corporation , National Science Foundation ( CHE-0748867 ), the Department of Energy ( EE0005075 ), and Flexible Display Center for partial support of this work. Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

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doi = "10.1016/j.orgel.2016.05.041",

language = "English (US)",

volume = "37",

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journal = "Organic Electronics",

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AU - Fleetham, Tyler

AU - Ecton, Jeremy

AU - Li, Guijie

AU - Li, Jian

N1 - Funding Information: T. Fleetham and J. Ecton contributed equally to this work. The authors thank the Universal Display Corporation , National Science Foundation ( CHE-0748867 ), the Department of Energy ( EE0005075 ), and Flexible Display Center for partial support of this work. Publisher Copyright: © 2016 Elsevier B.V.

PY - 2016/10/1

Y1 - 2016/10/1

N2 - A highly efficient green microcavity organic light emitting diode was developed using a tetradentate cyclometalated platinum complex, PtN1N, with an intrinsically narrow emission spectral band (FWHM = 18 nm). Devices employing the narrow band emitter in MOLEDs consisting of a single pair of a high index dielectric, Ta2O5, and low index dielectric, SiO2, exhibited a high peak external quantum efficiency of 33.7% compared to a standard OLED in the same device architecture with a peak external quantum efficiency of 25.6%. We have also found in our study that narrow band emission sources in tuned microcavity OLEDs exhibit larger enhancements in light out-coupling efficiency accompanied by small changes in color with respect to viewing angle compared to broad band emitters which is advantageous in display applications.

AB - A highly efficient green microcavity organic light emitting diode was developed using a tetradentate cyclometalated platinum complex, PtN1N, with an intrinsically narrow emission spectral band (FWHM = 18 nm). Devices employing the narrow band emitter in MOLEDs consisting of a single pair of a high index dielectric, Ta2O5, and low index dielectric, SiO2, exhibited a high peak external quantum efficiency of 33.7% compared to a standard OLED in the same device architecture with a peak external quantum efficiency of 25.6%. We have also found in our study that narrow band emission sources in tuned microcavity OLEDs exhibit larger enhancements in light out-coupling efficiency accompanied by small changes in color with respect to viewing angle compared to broad band emitters which is advantageous in display applications.

KW - Light extraction

KW - Microcavity

KW - Narrow spectral emission band

KW - Platinum complexes

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SN - 1566-1199

VL - 37

SP - 141

EP - 147

JO - Organic Electronics

JF - Organic Electronics

ER -

Improved out-coupling efficiency from a green microcavity OLED with a narrow band emission source

Abstract

Keywords

ASJC Scopus subject areas

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